doc/hackathon/hist001__TH1__fillrandom_8C.html

void hist001_TH1_fillrandom()

{

   // Create a one dimensional histogram and fill it with a gaussian distribution

   int nBins = 200;

   double rangeMin = 0.0;

   double rangeMax = 10.0;

   TH1D h1d("h1d", "Test random numbers", nBins, rangeMin, rangeMax);


   // "gaus" is a predefined ROOT function. Here we are filling the histogram with

   // 10000 values sampled from that distribution.

   h1d.FillRandom("gaus", 10000);


   // Open a ROOT file and save the histogram

   auto myfile = std::unique_ptr<TFile>(TFile::Open("fillrandom.root", "RECREATE"));

   myfile->WriteObject(&h1d, h1d.GetName());

}

TFile::Open
static TFile * Open(const char *name, Option_t *option="", const char *ftitle="", Int_t compress=ROOT::RCompressionSetting::EDefaults::kUseCompiledDefault, Int_t netopt=0)
Create / open a file.
Definition TFile.cxx:3787

TH1D
1-D histogram with a double per channel (see TH1 documentation)
Definition TH1.h:926

hist001_TH1_fillrandom
Definition hist001_TH1_fillrandom.py:1